One-way plug

Abstract

A one-way plug includes a housing including a plate, an upper stopper having an overlap part extending downward from a side of the plate, and a lower body having a sealing surface part formed to extend in a cylindrical shape with a hollow downward from the plate, and a valve body provided in the hollow of the lower body and configured to cover the hollow, and having a wing part elastically deformed and configured to open the hollow.

What is claimed is: 
     
       1. A one-way plug, comprising:
 a housing comprising a plate, an upper stopper having an overlap part extending downward from a side of the plate, and a lower body having a sealing surface part formed to extend in a cylindrical shape with a hollow downward from the plate; and 
 a valve body provided in the hollow of the lower body and configured to cover the hollow, and having a wing part elastically deformed and configured to open the hollow, 
 wherein a lower portion of the sealing surface part is formed with a groove part having a smaller diameter than that of the sealing surface part along an outer circumference. 
 
     
     
       2. The one-way plug of  claim 1 , wherein an upper discharge hole is formed in the plate. 
     
     
       3. The one-way plug of  claim 2 , wherein:
 the upper discharge hole is divided and formed in plural in the plate; and 
 the upper stopper further comprises a valve support part extending downward from a center of the plate and formed with a vertical hole in a longitudinal direction. 
 
     
     
       4. The one-way plug of  claim 1 , wherein the sealing surface part is formed with a side discharge hole. 
     
     
       5. The one-way plug of  claim 1 , wherein the lower portion of the sealing surface part is formed with a valve stopper protruding in a direction of the hollow. 
     
     
       6. The one-way plug of  claim 1 , wherein:
 the upper stopper further comprises a valve support part extending downward from a center of the plate and formed with a vertical hole in a longitudinal direction; and 
 the valve body further comprises a wing support part extending upward from a center of the wing part and inserted into the vertical hole of the valve support part. 
 
     
     
       7. The one-way plug of  claim 6 , wherein the valve body further comprises:
 a sealing surface part of the valve body in contact with the outer circumference of the sealing surface part of the lower body; and 
 a lower stopper part formed on the lower portion of the sealing surface part and having a shape protruding and expanding inward and outward with respect to the sealing surface part, respectively. 
 
     
     
       8. The one-way plug of  claim 7 , wherein the lower stopper part is inserted into the groove part. 
     
     
       9. The one-way plug of  claim 7 , wherein a height of the sealing surface part of the lower body and a height of the sealing surface part of the valve body are the same. 
     
     
       10. The one-way plug of  claim 9 , wherein when inserted into a drain hole formed in a vehicle body, the overlap part is configured to overlap with the upper surface of the vehicle body, and an upper surface of the sealing surface part of the lower body and an upper surface of the sealing surface part of the valve body are spaced at a certain interval apart from the upper surface of the vehicle body to form a step. 
     
     
       11. The one-way plug of  claim 7 , wherein the valve body is formed integrally with the housing by double injection. 
     
     
       12. The one-way plug of  claim 11 , wherein the valve body is made of a softer material than that of the housing. 
     
     
       13. A vehicle comprising:
 a vehicle body having a drain hole; 
 a one-way plug mounted to the drain hole of the vehicle body, the one-way plug comprising:
 a housing comprising a plate, an upper stopper having an overlap part extending downward from a side of the plate, and a lower body having a sealing surface part formed to extend in a cylindrical shape with a hollow downward from the plate; and 
 a valve body provided in the hollow of the lower body and configured to cover the hollow, and having a wing part elastically deformed and configured to open the hollow, 
 
 wherein a lower portion of the sealing surface part is formed with a groove part having a smaller diameter than that of the sealing surface part along an outer circumference. 
 
     
     
       14. The vehicle of  claim 13 , wherein an upper discharge hole is formed in the plate. 
     
     
       15. The vehicle of  claim 14 , wherein:
 the upper discharge hole is divided and formed in plural in the plate; and 
 the upper stopper further comprises a valve support part extending downward from a center of the plate and including a vertical hole in a longitudinal direction. 
 
     
     
       16. The vehicle of  claim 13 , wherein the sealing surface part is formed with a side discharge hole. 
     
     
       17. The vehicle of  claim 13 , wherein the lower portion of the sealing surface part includes a valve stopper protruding in a direction of the hollow. 
     
     
       18. The vehicle of  claim 13 , wherein:
 the upper stopper further comprises a valve support part extending downward from a center of the plate and formed with a vertical hole in a longitudinal direction; and 
 the valve body further comprises:
 a wing support part extending upward from a center of the wing part and inserted into the vertical hole of the valve support part; 
 a sealing surface part of the valve body in contact with the outer circumference of the sealing surface part of the lower body; and 
 a lower stopper part formed on the lower portion of the sealing surface part, having a shape protruding and expanding inward and outward with respect to the sealing surface part, respectively, and inserted into the groove part.